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Date:   Tue, 21 Mar 2023 21:53:11 +0100
To:     "Maxime Ripard" <maxime@cerno.tech>
Cc:     "Chen-Yu Tsai" <wens@csie.org>, "David Airlie" <airlied@gmail.com>,
        "Daniel Vetter" <daniel@ffwll.ch>,
        "Jernej Skrabec" <jernej.skrabec@gmail.com>,
        "Samuel Holland" <samuel@sholland.org>,
        <dri-devel@lists.freedesktop.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-sunxi@lists.linux.dev>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] drm/sun4i: uncouple DSI dotclock divider from
 TCON0_DCLK_REG
From:   "Roman Beranek" <romanberanek@icloud.com>
Message-Id: <CRCCWA4HQQX4.YATGMBYCEH72@iMac.local>
References: <20230320161636.24411-1-romanberanek@icloud.com>
 <20230321145646.w6kr7ddurfxpg5rt@houat>
In-Reply-To: <20230321145646.w6kr7ddurfxpg5rt@houat>
Precedence: bulk

On Tue Mar 21, 2023 at 5:50 PM CET, Roman Beranek wrote:

> > Also, how was it tested/confirmed?
>
> By counting Vblank interrupts (GIC 118).

Sorry, that was perhaps too abbreviated. To test this change, I set up
an A64 board running kmscube on DSI-1 and verified that the rate of
Vblank IRQs tracked with a video mode set on DSI-1, once with a 2-lane
panel and once with a 4-lane panel.

Roman